Sash-lock.



VV. F. OROURKE.

SASH LOCK.

APPLlcATloN FILED APR. l, 1916.

Patented. Dec. 12, 1916.

WILLIAM F. OROURKE, OF CHICAGO, ILLINOIS.

SASI-I-LOCK.

Application filed April 1, 1916.

T0 all whom t may concern:

Be it known that I, WILLIAM F. ORoUnKE, a citizen of the United States,and a resident of Chicago, county of Cook, and State of Illinois, haveinvented certain new and useful Improvements in Sash- Iiocks, of whichthe following is declared to be a full, clear, and exact description.

This invention relates to sash locks, and its principal object is toprovide means for automatically swinging down into locked position, thelocking arm of the sash lock.

This invention has particular reference to that type of sash lockswherein a horizontally pivoted arm is employed on the lock member of theupper sash for swinging down over an upstanding flange on the lockmember of the lower sash.

The invention consists in the several novel features hereinafter fullyset forth and claimed.

The invention is clearly illustrated in the drawing accompanying thisspecification, in which Figure 1, is a transverse section throughfragments of the upper and lower sashI of a window and showing myimproved sash lock applied thereto, the sash lock being shown partly inside elevation and partly in section; Fig. 2, is a plan of the sashlock, the window pane of the upper sash being shown in horizontalsection, and Fig. 8, is a vertical transverse section through the sashand lock showing the lower sash partly raised.

Referring to said drawing, A, is the upper sash and B, is the lowersash. The upper lock member 10 of the lock has a horizontal plate 11,which is provided for with screw holes for the reception of screws forsecuring the member to the meeting rail of the upper sash. Projecting upfrom said plate 11, are two spaced locking arm supports 12, betweenwhich is secured the locking arm 13. A transverse pivot pin 14, connectsthe locking arm 13, with its suipports 12.

The lock member 15, is the one secured to the meeting rail of the lowersash and like the other lock member it has a horizontal plate 16,provided with screw holes for the reception of screws for securing it tothe rail. Said member 15, has an upstanding lug 17 located at thedividing line of the meeting rails, which when in locked position isoverhung by the lock-ing arm 13.

Specification of Letters Patent.

Patented Dec. 12,1918..

Serial No. 88,301.

Said locking arm has a member 18, which when in locked position extendsup from the pivot pin 14, and from the end of said part 18, is adownwardly inclined part 19, which overhangs the upstanding lug 17; ithas a ring portion 20, at its end, which may be taken hold of inswinging the locking arm from its locked position to an unlockedposition. The parts thus far described are old and well known, and Imake no claim to them separate from the improvements which I have made.

W ith the form of sash lock above de' scribed, it was necessary, afterthe window had been closed, to pull down the locking arm in order tolock the two members of the sash together. In the present invention, Ihave provided means upon the lock member of the lower sash for engagingthe member 18, ofthe locking arm just as the meeting rails of the twosashes come together, for swinging the locking arm down and over theupstanding lug 17 of the lower sash lock member. This means comprises alocking arm actuating member 21, upon the lower sash lock member 15,which is arranged to engage with a projecting end portion 22, of thepart 18, just before the meeting rails reach the closed position of thetwo sashes (see Fig. 3). Downward movement of the lower sash, past thisposition will cause the member 21, to strike the end portion 22, andswing the locking arm in the direction of the arrow thereon, therebyswinging over the lug 17, as the two sashes come to their locked orclosed position. To unlock the sash the locking arm'is swung back intothe position shown in dotted lines in Fig. 1, and in full lines in Fig.3. The protruding end of the member 21, is rounded off and is springpressed to permit of its movement past the end portion 22, when thelower sash is raised from its closed position, since otherwise it wouldengage said end portion and become arrested thereby. For convenience, Ihave shown the member 21, in the form of a short bolt or pin seated in arecess 24E, in the underside of the lower lock member 15, and springpressed toward the other lock member by a spring 25, which bears againstthe end of said recessed portion and against the bolt 21. The latter hasa fiange which is pressed against the end of the recessed portion by thespring. In the upward movement of the lower sash, from its closedposition, the spring pressed bolt 21, strikes vagainst the end portion22, and slides back intothe recess as it passes said end portion, thespring returning it to its formerposition directly thereafter. The uppersash lock member 10, hasanupstanding ange 26, (see Fig. 3) upon whichthe lock arm rests when thrown back, and said flange holds the lockingarm in position to be struck by the Yspring pressed member 21, when-thetwo sashes reach their closing position. j

More or less variation of the exact details of construction are possiblewithout departing from the spirit of this invention; I desire,therefore, not to limit myself to the exact formv of construction shownand described, but intend in the following claims to point out all ofthe invention disclosed herein.

I claim as newand desire to secure by Letters Patent:

l. A sash lock comprising a lower sash lock member, and an upper sashlock member, said lower sash lock member having an upstanding lug formedwith a recess therein adjacent the meeting edges of the sash,

and having also a locking arm swinging member in said recess, said uppersash lock member having a locking arm pivoted thereto on a horizontalpivot parallel with the meeting edges of the sash, and said lockve centseach, by addressing the Washington, I). C.

ing arm having a portion adapted to eX- tend up directly from its pivotwhich portion terminates in an inclined part adapted to overhang theupstanding lug on the lower sash lock member in locking position whenboth sashes are closed, but capable of being swung back away from saidlug to an unlocked position, said locking arm having also a portionlying in the path of movement of the member of the lower sash lockmember; substantially as and for the purpose set forth.

2. A sash lock comprising lower and upper sash lock members, the lowersash lock member having an upstanding lug adjacent the meeting edges ofthe sash, and having a recess in its lower side, a spring pressed memberin said recess protruding out through the end thereof adjacent themeeting edges of the sash; said upper sash lock member having a lockingarm pivoted thereto on a pivot parallel with the meeting edges of thesash, said locking arm having a part on one side of its pivot adapted tolie in the path of travel of the spring pressed member, when in unlockedposition, for the purpose specified, and having a portion adapted toextend directly up from said pivot, which portion terminates in aninclined part that overhangs said lug when in its locked position.

WILLIAM F. OROURKE.

Commissioner of Patents,

